Quantitative Aptitude - Arithmetic Ability Questions

If 13x2 = 172 - 92, find the value of x?

Two circles touch each other at point X. A common tangent touch them at two distinct points Y and Z. If another tangent passing through X cut YZ at A and XA= 16 cm, then what is the value (in cm) of YZ?

What number should be added to each of the numbers 94, 24, 100 and 26, so that the resulting numbers are in continued proportion?

If cos3A = X, then value of X?

Product of digits of a 2-digit number is 15. If we add 18 to the number, the new number obtained is a number formed by interchange of the digits. Find the number.

If 2x + 3y = 0 and 3x ­- 4y = 34, then x ­- y = ______

Which of the following is not a quadratic equation?

The simplest form of 3565/1495 is